Very interesting and strange somehow…it’s about the same former WW2 Eastern Front combat area (and a camp area of a big german or romanian unit from then, I’m not sure yet…) like the other finds… Thinking about the position, geographic ‘points’ and the context…for the first I thought it’s ‘from’ the soviets (smb. from Red Army, the 2nd Ukrainian Front…fired to the germans/romanians positions…) ?!

Romania, as well as Poland, used a considerable number of French weapons after WW1. Finding a balle D in an area used by Romanian forces is quite plausible.

Regarding the caliper, its perfectly suited to measure bullets. Your photographs show its jaws along the longitudinal axis of the bullets. When measuring, a 90 degree angle between jaws and bullets is best. Also, be sure the jaws contact the largest diameter area, not one of the grooves left on the bullet by the rifling.

JPeelen, u’r right ! BUT…thinking about the “position” of the bullet (not depth…), the historical context… (august 1944…) and the opposing forces positions/movements…I thought this bullet is ‘from’ soviets…BUT… ;-/

Rojon,
believe it or not, 7.94 mm is about right for the crimping groove of the French balle D. From the photographs, it looks you are measuring crimping groove diameter.
The largest bullet diameter (about 8.3mm) in this case is just in front (towards the bullet nose) of the groove. The rear part directly behind the groove should be about 8.1 mm. This is a peculiarity of the balle D. Most bullets have the largest diameter near the base.

Edit: Measuring the crimping groove would also explain the 7.92 mm you show for the suspected German bullet in the other thread. German crimping groove diameter is nominally 7.95 mm. If you use the flat part of the caliper jaws instead of the knife edge part at the mouth, you can easily avoid measuring the groove.

So…could this bullet be 8mm Lebel Mle 1886D ?
Mmmm, I didn’t find any mentions about using Lebel rifle by the Romanian Army in the WW2 (only Berthier and Mannlicher md. 1893 and md. 1895, as old rifles)…BUT…